New TECFIDERA® (dimethyl fumarate) data show sustained efficacy and long-term safety in a broad range of multiple sclerosis patients Biogen Idec, 4 Oct 2013 Accessed on 4 Oct 2013 from http://www.biogenidec.com/press_release_details.aspx?ID=5981&ReqId=1861556. CommentRecommendBookmarkWatch